Izmjenjena struktura, dodan backand

web/node_modules/react/lib/shallowCompare.js

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+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ */
+
+'use strict';
+
+var shallowEqual = require('fbjs/lib/shallowEqual');
+
+/**
+ * Does a shallow comparison for props and state.
+ * See ReactComponentWithPureRenderMixin
+ * See also https://facebook.github.io/react/docs/shallow-compare.html
+ */
+function shallowCompare(instance, nextProps, nextState) {
+  return !shallowEqual(instance.props, nextProps) || !shallowEqual(instance.state, nextState);
+}
+
+module.exports = shallowCompare;